Nematheriinae

Casali, Daniel M, Boscaini, Alberto, Gaudin, Timothy J & Perini, Fernando A, 2022, Reassessing the phylogeny and divergence times of sloths (Mammalia: Pilosa: Folivora), exploring alternative morphological partitioning and dating models, Zoological Journal of the Linnean Society 196 (4), pp. 1505-1551 : 1523

Nematheriinae

PP = 100, age = 18.60 Mya (16.85–20.28).

This clade contains the genera Nematherium and Analcitherium , and was recovered in all analyses performed in this study.

Nematheriinae was supported by seven synapomorphies, all recovered with both methods: anteroposteriorly ovate Mf4 cross-section; snout depressed anteriorly; external nares not greatly enlarged; absence of pterygoid inflation; presence of lacrimal eminence; presence of prominent lateral walls in lacrimal foramen; and jugal and lacrimal anteriorly overlapping facial portion of maxilla.